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User-configurable, efficiency-optimizing, calibrated sensorless power/energy conversion switch-mode power supply with a serial communications interface

A switch-mode power supply and power switch technology, which is used in output power conversion devices, conversion equipment without intermediate conversion to AC, and adjustment of electrical variables, which can solve problems such as the problem of accurate measurement of different load currents.

Inactive Publication Date: 2013-09-25
MICROCHIP TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, accurate measurement of inductor current and different load currents from one SMPS to another becomes problematic

Method used

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  • User-configurable, efficiency-optimizing, calibrated sensorless power/energy conversion switch-mode power supply with a serial communications interface
  • User-configurable, efficiency-optimizing, calibrated sensorless power/energy conversion switch-mode power supply with a serial communications interface
  • User-configurable, efficiency-optimizing, calibrated sensorless power/energy conversion switch-mode power supply with a serial communications interface

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Embodiment Construction

[0021] Reference is now made to the drawings, which schematically illustrate details of certain example embodiments. In the drawings the same elements will be represented by the same numerals, and similar elements will be represented by the same numerals with different lowercase letter suffixes.

[0022] In a general sense, a power converter can be defined as a device that converts one form of energy into another on a continuous basis. Any storage or loss of energy within this power system is generally the same as the process of energy conversion as it performs its conversion function. There are many types of devices that can provide this functionality with varying degrees of cost, reliability, complexity, and efficiency.

[0023] Mechanisms for power conversion can take many basic forms, such as those that are mechanical, electrical or chemical in nature. The focus of this article is on power converters that perform energy conversion electrically and dynamically using a defin...

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Abstract

An intelligent pulse width modulation (PWM) controller adapts a switch mode power supply (SMPS) system's operating parameters to optimize efficiency, remove hot spots and isolate faults by integrating a microcontroller, PWM digital circuits and analog circuits into a single integrated circuit, thereby reducing the number of external connections, silicon die area and integrated circuit packages. A lossless inductor current sense technique integrates a matched, tunable complimentary filter with the intelligent SMPS controller for accurately measuring current through the power inductor of the SMPS without introducing losses in the power circuit. The complimentary filter is adjusted by the microcontroller to significantly reduce the effects of component tolerances, accurately measuring the power inductor current for precise closed loop control and over current protection.; The frequency pole and gain of the complimentary integrated filter can be adjusted on the fly in order to adapt to dynamically changing operating conditions of the SMPS system.

Description

[0001] Related patent applications [0002] This application asserts Terry Cleveland, Clifford Ellison III, Scott Dearborn, and Kisparzul, filed December 3, 2010 (Keith Pazul) titled "User-Configurable, Calibrated Sensorless Efficiency-Optimizing, Power / Energy Conversion Switch Mode Power Supply with Serial Communication Interface (User-Configurable, Calibrated Sensorless Efficiency-Optimizing, Power / Energy Conversion Switch -Mode Power Supply with a Serial Communications Interface)" in commonly-owned U.S. Provisional Patent Application No. 61 / 419,593, and with Scott Dearborn's 2011 __ application entitled "Switch Mode Power Supply Co-owned U.S. Patent Application No. __ for Lossless Inductor Current Sensing in a Switch-Mode Power Supply; Terry Cleveland, Clifford Ellie, filed __ in 2011 Sen III, Scott Dearborn, and Kispazul entitled "User-Configurable, Efficiency-Optimizing Calibrated Sensorless Power / Energy Conversion in Switch-Mode Power Supplies (User-Configurable, Efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/157
CPCH02M3/157H02M3/10H02M3/145H02M3/155
Inventor 泰瑞·克莱维兰克利福·埃里森斯考特·迪尔伯恩基斯·保祖尔
Owner MICROCHIP TECH INC